Headphone Issue Remains: Only plays through right after repair

I have followed the tutorial and replaced my headphone jack assembly. The headphone jack still plays through the right channel only. I have tried no less than 12 different 3.5mm aux cords and headphones including different brands. I have dissasembled the phone three times to double check my repair and make sure everything is seated the way I think it should be. I am missing some connection though. Slight pressure towards the phone and spinning the headphone jack plug usually gets most headphones to register and play through the right while I continue to apply pressure. Is there a plug or connection I may have missed. I am sure I may have missed something but can't seem to diagnose the cause.